฿13,009+ Cheap flights to Portsmouth

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
24 Apr — 1 May1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Portsmouth
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 25 March 2026.

Tue 5/501:45
BKK
-
SOU
2 stops23h 45m
Qatar Airways
Sun 10/520:00
SOU
-
BKK
2 stops29h 05m
Qatar Airways
Deal found 24/3฿41,797
Thu 2/421:05
BKK
-
SOU
2 stops28h 25m
Qatar Airways
Wed 22/420:00
SOU
-
BKK
2 stops40h 20m
Qatar Airways
Deal found 22/3฿46,361
Thu 2/421:05
BKK
-
SOU
2 stops28h 25m
Qatar Airways
Fri 24/420:00
SOU
-
BKK
2 stops29h 05m
Qatar Airways
Deal found 22/3฿46,720
Wed 1/421:05
BKK
-
SOU
2 stops52h 25m
Qatar Airways
Thu 23/420:00
SOU
-
BKK
2 stops34h 55m
Qatar Airways
Deal found 22/3฿46,850
Thu 2/403:00
BKK
-
SOU
2 stops22h 30m
Qatar Airways
Wed 22/420:00
SOU
-
BKK
2 stops40h 20m
Qatar Airways
Deal found 22/3฿47,144
Wed 1/421:05
BKK
-
SOU
2 stops52h 25m
Qatar Airways
Sun 19/409:10
SOU
-
BKK
2 stops22h 10m
Qatar Airways
Deal found 22/3฿47,242
Thu 2/402:30
BKK
-
SOU
2 stops23h 00m
Qatar Airways
Sun 19/409:10
SOU
-
BKK
2 stops22h 10m
Qatar Airways
Deal found 22/3฿47,503
Thu 2/421:05
BKK
-
SOU
2 stops28h 25m
Qatar Airways
Thu 21/509:10
SOU
-
BKK
2 stops21h 45m
Qatar Airways
Deal found 22/3฿48,122
Thu 14/520:30
BKK
-
SOU
2 stops29h 00m
Qatar Airways
Mon 18/520:00
SOU
-
BKK
2 stops29h 05m
Qatar Airways
Deal found 20/3฿48,285
Wed 1/421:05
BKK
-
SOU
2 stops52h 25m
Qatar Airways
Wed 20/520:00
SOU
-
BKK
2 stops29h 05m
Qatar Airways
Deal found 22/3฿48,611
Thu 2/403:00
BKK
-
SOU
2 stops22h 30m
Qatar Airways
Thu 21/509:10
SOU
-
BKK
2 stops22h 15m
Qatar Airways
Deal found 22/3฿48,904

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 25 March 2026.

Return from

฿22,300

One-way from

฿13,009

Popular in

January

Cheapest in

November

Average price

฿31,397
2/5-7/5
  • 2/5-7/5
  • 3 total stops
  • 48h 20m total
  • Bangkok to London
Search Deals
10/7
  • 10/7
  • 3 total stops
  • 43h 20m total
  • Bangkok to Portsmouth
Search Deals
Highest demand for flights based on searches. 0% potential increase in price.
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿304 potential savings vs. average return price).
Search Deals
Average for return flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 25 March 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 5/5

01:45-19:30

2 stops23h 45m

Southampton Eastleigh

Sun 10/5

20:00-07:05

2 stops29h 05m

฿41,797

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 2/4

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Thu 23/4

20:00-12:55

2 stops34h 55m

฿47,144

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 2/4

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Fri 24/4

20:00-07:05

2 stops29h 05m

฿47,503

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 13/5

02:05-19:30

2 stops23h 25m

Southampton Eastleigh

Mon 18/5

20:00-13:25

2 stops35h 25m

฿48,122

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 2/4

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Mon 18/5

20:00-07:05

2 stops29h 05m

฿48,904
Fastest return journey

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 2/4

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Thu 21/5

09:10-13:25

2 stops22h 15m

฿48,904

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 2/4

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Sun 17/5

20:00-07:05

2 stops29h 05m

฿57,479
Cheapest one-way

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Fri 17/4

09:05-19:30

2 stops40h 25m

฿18,714

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Mon 27/4

20:35-19:30

2 stops28h 55m

฿20,898

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 16/4

19:40-19:30

2 stops29h 50m

฿20,931

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from Bangkok to Portsmouth takes 29 hours 30 minutes. Flights to Portsmouth from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, China Eastern is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around ฿9,831, however they can be found for as little as ฿8,477.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Bangkok offers the quickest one-way flight (29 hours 30 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aeropartment & Aerotel, London Heathrow Airport, Terminal 4, Ev Stations & Cheap Parking On Site! is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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